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Issue 722281 link

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Issue metadata

Status: Duplicate
Owner:
Closed: May 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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41.3% improvement in page_cycler_v2.intl_hi_ru at 470445:470501

Project Member Reported by yhirano@chromium.org, May 15 2017

Issue description

See the link to graphs below.
 
All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=722281

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgqtnBuwkM


Bot(s) for this bug's original alert(s):

android-nexus5
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, May 15 2017

Mergedinto: 721238
Status: Duplicate (was: Assigned)

=== BISECT JOB RESULTS ===
Perf regression found with culprit

Suspected Commit
  Author : yhirano
  Commit : 91088a195969f5af61f404c9f02edc622cbe373a
  Date   : Wed May 10 05:49:31 2017
  Subject: Add Field Trial Testing Configuration for MojoLoading

Bisect Details
  Configuration: android_nexus5_perf_bisect
  Benchmark    : page_cycler_v2.intl_hi_ru
  Metric       : timeToFirstMeaningfulPaint_avg/pcv1-cold/http___news.google.co.in_nwshp?tab_in_hl_hi
  Change       : 41.16% | 1731.69616667 -> 1018.86316667

Revision             Result                  N
chromium@470444      1731.7 +- 26.4951       6      good
chromium@470473      1720.25 +- 36.8473      6      good
chromium@470487      1721.32 +- 24.0514      6      good
chromium@470489      1718.83 +- 41.5412      6      good
chromium@470490      1021.47 +- 22.4072      6      bad       <--
chromium@470491      1023.41 +- 28.4349      6      bad
chromium@470494      1010.37 +- 68.0088      6      bad
chromium@470501      1018.86 +- 32.1204      6      bad

To Run This Test
  src/tools/perf/run_benchmark -v --browser=android-chromium --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=http...news.google.co.in.nwshp.tab.in.hl.hi page_cycler_v2.intl_hi_ru

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8979537268525014848

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5889011714883584


| O O | Visit http://www.chromium.org/developers/speed-infra/perf-bug-faq
|  X  | for more information addressing perf regression bugs. For feedback,
| / \ | file a bug with component Speed>Bisection.  Thank you!

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